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题库 / Prep2007E2-CR-16
When an airplane is taken out of service for maintenance, it is often repainted as well, and during the repainting no other maintenance work can be done on the plane. In order to reduce maintenance time, airline officials are considering using a new nontoxic plastic film instead of paint. The film takes just as long to apply as paint does, but many other maintenance tasks can be carried out at the same time.
Which of the following, if true, is further evidence that using the film will help the airline officials achieve their goal?
Unlike paint, the film gives a milky tone to certain colors.
At the end of its useful life, the film can be removed much more quickly than paint can.
The film can be applied only by technicians who have received special training.
The metal exteriors of airplanes have to be protected from high temperatures and caustic chemicals such as exhaust gases.
Even at speeds considerably higher than the normal speed of a passenger jet, the film remains securely attached.
不是at the same time吗？一边弄film一边同时干别的
我其实没太看懂这个问题...
是同时啊，答案选项的意思是，如果最后摘除掉这层膜比较费劲的话，那总时间还是要很久，无法真正提高效率。
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